This release adds typing information for function arguments and returns. Thank you JulianOrteil.
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-mpr121`.
Read the [docs](http://circuitpython.readthedocs.io/projects/mpr121/en/latest/) for info on how to use it.